427215166 has 16 divisors (see below), whose sum is σ = 732647520. Its totient is φ = 183022560.

The previous prime is 427215143. The next prime is 427215167. The reversal of 427215166 is 661512724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427215167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52500 + ... + 60088.

It is an arithmetic number, because the mean of its divisors is an integer number (45790470).

Almost surely, 2^427215166 is an apocalyptic number.

427215166 is a deficient number, since it is larger than the sum of its proper divisors (305432354).

427215166 is a wasteful number, since it uses less digits than its factorization.

427215166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11619.

The product of its digits is 20160, while the sum is 34.

The square root of 427215166 is about 20669.1839703458. The cubic root of 427215166 is about 753.1512834867.

The spelling of 427215166 in words is "four hundred twenty-seven million, two hundred fifteen thousand, one hundred sixty-six".